Clutch,mount's,and speedo. it don't matter mount's can be made clutch's can be gotten wink . speedo's are offered in both electronic and mechanical by auto meter i believe is the brand :confused: .

would i have split every gear? like a my B61T's triplex 15 gear's up 15 gear's down miss one blow a head gasket stupid thermodyn, well only if you lug it anyway :-).

so would i have to hit all 8 gear's ?
would it be a 2 sticker than ?

the truck get's driven to the car show's so it get's plenty of interstate travel, yet it haul's some brush, firewood and pull's a few stump's here and there if someone need's somthing fiarly heavy moved i'll use it.

I was thinking of upgrading from the 351D to the 351M for the exrta grunt to pull the over drive. just don't think it's enough extra power to get away with out granny low.

i was thinking or running the 351M with 5 or 6 spd in the 62 Dually than putting the 351D and 4 spd in the half ton as there is nothing worng with it but i'm sure i can get another granny 4spd for the 1/2ton.

i was told "the over drive would dog it out" or " it will revving to low " i say it cruze's at 3 grand now and with the OD it'll still run 3 grand just instead of running 58-62MPH it will be more like 68-72MPH! i'm hoping ...

the gear vender OD i've heard of it i don't know how it work's or what the ratio's are.

i am liking the sound of more power and 8 speed's
cool 351M 8spd cool cool 5.13's 8-19.5's cool

1962 GMC K3000, GMC-379 V6.